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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 7 — Apr. 7, 2014
  • pp: 7947–7952

Quantum path selection in high-order harmonic generation from aligned molecules

Xun Zhu, Chaojin Zhang, Mingliang Gu, and Jinping Yao  »View Author Affiliations


Optics Express, Vol. 22, Issue 7, pp. 7947-7952 (2014)
http://dx.doi.org/10.1364/OE.22.007947


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Abstract

We theoretically investigate high-order harmonic generation (HHG) from aligned N2 molecules with a driving field composed of two-color circularly polarized laser pulses. It is shown that the combination of N2 molecules and the waveform-controlled laser field allows us to select either long or short quantum path, depending on molecular alignment angles, while in atom Ar, two paths show comparable contribution to HHG. The selection of single quantum path in aligned N2 molecules leads to an ultrabroad and smooth XUV supercontinuum, giving rise to isolated attosecond pulses generation. Moreover, we can control the intensity ratio of two attosecond pulses by adjusting the molecular alignment angles, providing an opportunity for attosecond pump-probe technique.

© 2014 Optical Society of America

OCIS Codes
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(320.2250) Ultrafast optics : Femtosecond phenomena
(320.7150) Ultrafast optics : Ultrafast spectroscopy

ToC Category:
Ultrafast Optics

History
Original Manuscript: December 17, 2013
Manuscript Accepted: March 13, 2014
Published: March 28, 2014

Citation
Xun Zhu, Chaojin Zhang, Mingliang Gu, and Jinping Yao, "Quantum path selection in high-order harmonic generation from aligned molecules," Opt. Express 22, 7947-7952 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-7-7947


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